Gilgamesh' desendant

Many years ago king Gilgamesh upon realizing that death was also part of his mission he decided that he would leave a piece of his legacy behind making it so his children and some of his descendants would inherit his magical abilities and a chosen few would gain the ability to summon two legendary weapons to assist them on the battle. 

The Golden Treasury

 

Starting at 1st level, descendants of Gilgamesh develop the ability to summon portals to a demi-plane known as the Golden Treasury. Each treasury is unique to the user and is a reality created by how they imagine it for some is a massive vault with weapons and gold lying down everywhere and for others, it could be a mansion where all their weapons are kept in the walls and perfectly organized.

Your treasury can be used to store your possessions but you cannot physically enter it. Starting at level 14 you can cast a variant of Demiplane as a ritual to open a door into your Golden Treasury.

Time inside the treasury moves at a sixth of the speed of the Material Plane while the door is shut, meaning that for every six seconds that passes inside the treasury one will pass in the Material Plane.

The gate can only be entered by willing creatures. Any mind-altering effect is discarded and the creature must be fully aware of what they are doing in order to enter the treasury.

 

Playing with and as a descendant of Gilgamesh: I will personally recommend DM and player talk to each other about the treasury some might choose to give free control over it to the player and later regret this, the best option is to simply talk to them and spend some time knowing what goes inside of it the only limit is the imagination but here are some rules I would recommend. 

• You can't create monsters inside the treasury: This is so the player doesn't say something like they have a Red Dragon watching over their gold but I personally like the idea of the treasury having some sort of spirits that take care of it and keep in nice and clean. 
• Downtime Inside the treasury: 100% DMs call in the treasury you will have 6 times as much time to work with so crafting and other stuff will, of course, be faster, this might be good for some DMs but horrible for others so just...Give it some taught and make sure you don't regret this later.
• Aging inside the Treasury: All living beings would age at the same speed as time passes inside the treasury so you could say you age 6 times as fast and so does everything else, this is my personal take so once again 100% up to DM. 

The Gate of Babylon

Starting at 1st level, you can summon 5-foot radius intangible portals into your Golden Treasury. The portals can be summoned on any space 15 ft around you and the portals can be used to summon any object out of the Treasury or to place one inside of it. In order to take out an object one must simply will it so and the portal will produce the object, materializing it in an unoccupied space near the portal.

You can also launch objects within your Demiplane, as if by the Catapult spell. In case of melee weapons, make an attack roll against the target using your spellcasting ability modifier. The weapon deals its basic attack damage using your ability modifier for its damage rolls.

Launched objects return to the Golden Treasury after a number of turns equal to 6 - your Charisma modifier provided that they're not being worn, carried, or destroyed.

Level	Number Of Gates
1	1
5	2
11	3
17	4

 

 

Melee weapons fired from the Gate of Babylon can be charged with energy, you can expend one spell slot to deal radiant damage to the target, in addition to the weapon's damage. The extra damage is 2d6 for a 1st-level spell slot, plus 1d6 for each spell level higher than 1st, to a maximum of 5d6.

 

Notes for DM and Players.

Ok, this is the most important skill so yes it is kind of complicated but long story short they work as follows. 

• The number of Gates is limited based on your level.
• Gates require you to have weapons inside of the Golden Treasury in order to fire them.
• Weapons retain any properties that can be used without attunement.
• Weapons that are fired will automatically return to the treasury after 6-(Charisma Mod) rounds.
• Gates have a range of 150/400 ft
• Gates can also use Wands and Staffs under DM discretion.

Golden Rule

Starting at 6th level, descendants of Gilgamesh have a limited amount of the ability Gilgamesh himself had to notice things around him and to express their charismatic side. At level 6, choose two skills from Insight, Intimidation, Perception, and Persuasion. You gain proficiency in your chosen skills. If you are already proficient in all four skills, you can double your proficiency modifier for two of the above skills.

You also add Identify to your list of known spells, and it is considered a sorcerer spell for you. You have advantage on Arcana and History checks to recall information about magic items.

You also have advantage on saves and checks made to see through and resist illusions.

Your Golden Treasury acquires the ability to create items with the gold stored inside of it, as long as you have the value of the item in gold you can create the items inside the treasury immediately making it part of it and being able to take it out as normal. This feature also works the other way around being able to transform items into their gold value. 

Enkidu: Chains of Heaven

Starting at 14th level, you inherit a section of the great restraining chain Enkidu, named for Gilgamesh's one and only friend in life.

When you hit a target with an attack from the Gate of Babylon, you can cast Hold Monster at will targeting. If the effect ends on them, you cannot cast this on the same target again until the next dawn. The spell ignores resistances and works on undead beings. 

EA: The Sword Of Rupture

starting at 18th level, you gain the ability to summon EA better known as the Sword of Rupture is the most powerful weapon that king Gilgamesh gave his descendants while this weapon takes a lot of energy to use the effects are truly devastating, you gain the ability to cast a new 9th level spell "Enuma Elish" the spell summons EA into your hand and fires it in a 60ft cone in a direction of your choice, creatures caught in the blast must make a Consitution Save or take 60D6 Force damage or half as much in a successful one. The caster may choose up to twice his Spellcasting Modifier creatures to make immune to the effects of the spell.